253939454 has 4 divisors (see below), whose sum is σ = 380909184. Its totient is φ = 126969726.

The previous prime is 253939423. The next prime is 253939459. The reversal of 253939454 is 454939352.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253939459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63484862 + ... + 63484865.

It is an arithmetic number, because the mean of its divisors is an integer number (95227296).

Almost surely, 2^253939454 is an apocalyptic number.

253939454 is a deficient number, since it is larger than the sum of its proper divisors (126969730).

253939454 is a wasteful number, since it uses less digits than its factorization.

253939454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126969729.

The product of its digits is 583200, while the sum is 44.

The square root of 253939454 is about 15935.4778403410. The cubic root of 253939454 is about 633.2522290110.

The spelling of 253939454 in words is "two hundred fifty-three million, nine hundred thirty-nine thousand, four hundred fifty-four".